Best Loft Insulation of 2026

Last updated on 03/04/2026
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Best Choice
1
9.8
Exceptional
EARTHWOOL 10 x Insulation Loft Rolls Knauf 200mm Thickness, 6.84m2 Per Roll Combi Cut 68.40m2 Area Covered Deliveries to Mainland UK ONLY
Earthwool

EARTHWOOL 10 x Insulation Loft Rolls Knauf 200mm Thickness, 6.84m2 Per Roll Combi Cut 68.40m2 Area Covered Deliveries to Mainland UK ONLY

Why we love it
  • Economical and lightweight insulation quilt.
  • Flexible with partially cut perforations.
  • Provides excellent thermal performance.
Main Highlights
  • 10 x New Knauf Earthwool 44 Loft roll 200mm in 6.84m2 per Pack Total is 68.40m2
  • For use as a top up layer or between ceiling joists. Lightweight and economical insulation quilt.
  • Partially cut perforations giving flexibility.
  • Provides excellent thermal performance.
  • PLEASE NOTE: THIS IS A KERBSIDE DELIVERY ONLY, THE DRIVER IS NOT INSURED TO TAKE THE ITEM AROUND THE BACK OF YOUR PROPERTY OR INSIDE YOUR PROPERTY! MAINLAND UK DELIVERIES ONLY! CANNOT SHIP TO BT AND IM / IV & KA POSTCODES!
9.8
Exceptional
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🛡️Trusted by 100M+ UsersWhy?
Best Value
2
9.7
Exceptional
EARTHWOOL 5 x Insulation Loft Rolls Knauf Earthwool 200mm Thickness, 6.84m2 Per Roll Combi Cut 34.20m2 Area Covered Deliveries to Mainland UK ONLY
Earthwool

EARTHWOOL 5 x Insulation Loft Rolls Knauf Earthwool 200mm Thickness, 6.84m2 Per Roll Combi Cut 34.20m2 Area Covered Deliveries to Mainland UK ONLY

Why we love it
  • Ideal for top layer insulation.
  • Flexible due to cut perforations.
  • Exceptional thermal performance guaranteed.
Main Highlights
  • 5 x New Knauf Earthwool 44 Loft roll 200mm in 6.84m2 per Pack Total is 34.20m2
  • For use as a top up layer or between ceiling joists. Lightweight and economical insulation quilt.
  • Partially cut perforations giving flexibility.
  • Provides excellent thermal performance.
  • PLEASE NOTE: THIS IS A KERBSIDE DELIVERY ONLY, THE DRIVER IS NOT INSURED TO TAKE THE ITEM AROUND THE BACK OF YOUR PROPERTY OR INSIDE YOUR PROPERTY! MAINLAND UK DELIVERIES ONLY! CANNOT SHIP TO BT AND IM / IV & KA POSTCODES!
9.7
Exceptional
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3
9.6
Superb
EARTHWOOL 3 x Insulation Loft Rolls Knauf 200mm Thickness, 6.84m2 Per Roll Combi Cut 20.52m2 Area Covered Deliveries to Mainland UK ONLY
Earthwool

EARTHWOOL 3 x Insulation Loft Rolls Knauf 200mm Thickness, 6.84m2 Per Roll Combi Cut 20.52m2 Area Covered Deliveries to Mainland UK ONLY

Why we love it
  • Excellent thermal performance guaranteed.
  • Great flexibility in installation.
  • Economical insulation solution.
Main Highlights
  • 3 x New Knauf Earthwool 44 Loft roll 200mm in 6.84m2 per Pack Total is 20.52m2
  • For use as a top up layer or between ceiling joists. Lightweight and economical insulation quilt.
  • Partially cut perforations giving flexibility.
  • Provides excellent thermal performance.
  • PLEASE NOTE: THIS IS A KERBSIDE DELIVERY ONLY, THE DRIVER IS NOT INSURED TO TAKE THE ITEM AROUND THE BACK OF YOUR PROPERTY OR INSIDE YOUR PROPERTY! MAINLAND UK DELIVERIES ONLY! CANNOT SHIP TO BT AND IM / IV & KA POSTCODES!
9.6
Superb
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4
9.5
Superb
EARTHWOOL 4 x Insulation Loft Rolls Knauf 200mm Thickness, 6.84m2 Per Roll Combi Cut 27.36m2 Area Covered Deliveries to Mainland UK ONLY
Earthwool

EARTHWOOL 4 x Insulation Loft Rolls Knauf 200mm Thickness, 6.84m2 Per Roll Combi Cut 27.36m2 Area Covered Deliveries to Mainland UK ONLY

Why we love it
  • Economical and lightweight insulation solution.
  • Provides flexibility with perforations.
  • Ideal for joist layers.
Main Highlights
  • 4 x New Knauf Earthwool 44 Loft roll 200mm in 6.84m2 per Pack Total is 27.36m2
  • For use as a top up layer or between ceiling joists. Lightweight and economical insulation quilt.
  • Partially cut perforations giving flexibility.
  • MAINLAND UK DELIVERIES ONLY! CANNOT SHIP TO BT AND IM IV & KA POSTCODES!
  • PLEASE NOTE: THIS IS A KERBSIDE DELIVERY ONLY, THE DRIVER IS NOT INSURED TO TAKE THE ITEM AROUND THE BACK OF YOUR PROPERTY OR INSIDE YOUR PROPERTY!
9.5
Superb
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5
9.3
Superb
Knauf Earthwool Loft Insulation 100 Millimetre x 13.89 Square Metre Per Roll Pack of 4 Rolls
Knauf

Knauf Earthwool Loft Insulation 100 Millimetre x 13.89 Square Metre Per Roll Pack of 4 Rolls

Why we love it
  • Ideal for top up layering.
  • Lightweight and cost-effective insulation.
  • Excellent thermal performance provided.
Main Highlights
  • For use as a top up layer or between ceiling joists.
  • Lightweight and economical insulation quilt.
  • Partially cut perforations giving flexibility.
  • Provides excellent thermal performance.
  • PLEASE NOTE: THIS IS A KERBSIDE DELIVERY ONLY, THE DRIVER IS NOT INSURED TO TAKE THE ITEM AROUND THE BACK OF YOUR PROPERTY OR INSIDE YOUR PROPERTY!
  • PLEASE NOTE: THIS IS A KERBSIDE DELIVERY ONLY, THE DRIVER IS NOT INSURED TO TAKE THE ITEM AROUND THE BACK OF YOUR PROPERTY OR INSIDE YOUR PROPERTY! MAINLAND UK DELIVERIES ONLY! CANNOT SHIP TO BT AND IM / IV & KA POSTCODES!
9.3
Superb
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6
9.2
Superb
Green Loft 8m Thermal Insulation Roll – 370mm x 50mm – Non-Itch, Moisture & Mould Resistant Loft, Wall & Roof Insulation – Energy-Saving DIY Loft Roll for Year-Round Comfort
Green Loft

Green Loft 8m Thermal Insulation Roll – 370mm x 50mm – Non-Itch, Moisture & Mould Resistant Loft, Wall & Roof Insulation – Energy-Saving DIY Loft Roll for Year-Round Comfort

Why we love it
  • Reduces energy costs effectively.
  • Prevents moisture and mould growth.
  • Simple and safe installation process.
Main Highlights
  • Cut Energy Bills All Year – Keep heat in during winter and block excess heat in summer for a more comfortable, energy-efficient home.
  • Stops Damp & Mould Damage – Hydrophobic fibres repel moisture to help prevent condensation, mould, and mildew in enclosed spaces.
  • Safe & Comfortable to Install – Non-itch, chemical-free polyester – no gloves or masks needed, perfect for DIY or professional use.
  • Insulates Any Space – Ideal for lofts, attics, wall cavities, sheds, garages, and roof voids in both renovations and new builds.
  • Easy-Cut, No-Sag Design – Lightweight and flexible to fit tight spots, holds shape over time for lasting insulation performance.
  • Specifications: These Thermal Insulation’s Length: 8 Metre, Width: 370 mm & Thickness: 50 mm. Coverage: 2.96 m² and R-value: 2.29 m² K/W.
9.2
Superb
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7
9.1
Superb
Green Loft 5m Thermal Insulation Roll – 370mm x 50mm – Non-Itch, Moisture & Mould Resistant Loft, Wall & Roof Insulation – Energy-Saving DIY Loft Roll for Year-Round Comfort
Green Loft

Green Loft 5m Thermal Insulation Roll – 370mm x 50mm – Non-Itch, Moisture & Mould Resistant Loft, Wall & Roof Insulation – Energy-Saving DIY Loft Roll for Year-Round Comfort

Why we love it
  • Energy-efficient home all year.
  • Prevents damp and mould damage.
  • Easy and safe to install.
Main Highlights
  • Cut Energy Bills All Year – Keep heat in during winter and block excess heat in summer for a more comfortable, energy-efficient home.
  • Stops Damp & Mould Damage – Hydrophobic fibres repel moisture to help prevent condensation, mould, and mildew in enclosed spaces.
  • Safe & Comfortable to Install – Non-itch, chemical-free polyester – no gloves or masks needed, perfect for DIY or professional use.
  • Insulates Any Space – Ideal for lofts, attics, wall cavities, sheds, garages, and roof voids in both renovations and new builds.
  • Easy-Cut, No-Sag Design – Lightweight and flexible to fit tight spots, holds shape over time for lasting insulation performance.
  • Product Dimensions & Coverage: Roll Size: 5 Metres (L) x 370mm (W) x 50mm (T). Coverage: 1.8 m² and R-Value: 2.29 m²·K/W – suitable for improving thermal efficiency in various construction settings.
9.1
Superb
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8
9.0
Superb
Knauf Loft Insulation Roll Roof Lagging 100 150 170 200mm Thick Attic and Floors (200mm, Cream)
LOWENERGIE

Knauf Loft Insulation Roll Roof Lagging 100 150 170 200mm Thick Attic and Floors (200mm, Cream)

Why we love it
  • Reduces heating bills significantly.
  • Environmentally friendly and odorless.
  • Lightweight and non-combustible.
Main Highlights
  • Knauf loft insulation will save you a lot of money by reducing heat loss through your roof. 35% of your heat is lost through your roof. Loft insulation can reduce heating bills by £350 per year (rising to huge savings of £700 to 1000/ year from late 2022 due to rising energy costs). Even making your loft insulation thicker to the recommended 270mm can save £200-300 per year.
  • Knauf Loft Roll Insulation is primarily used for the thermal insulation of pitched roofs at ceiling level and it can also be used to thermally insulate floors. When used to insulate at ceiling level it is usually laid in two layers, with the first layer between the joists and the second thick top layer over, and at right angles to the joists.
  • Knauf Loft Roll is free from CFCs, HCFCs and any other material with ozone depletion potential in its manufacture and content and represents no known threat to the environment. Knauf Loft Roll manufacture has a low impact on the environment and is classified as Zero ODP and Zero GWP.
  • Knauf Loft Roll is odourless, rot proof, non-hygroscopic, does not sustain vermin and will not encourage the growth of fungi, mould or bacteria.
  • Lightweight and economic insulation quilt. Provides thermal, acoustic and fire performance. Non-combustible. Very Low Itch (nice to install and nothing like the old itchy fibreglass). ECOSE Technology - softer to handle compared with traditional mineral wool
9.0
Superb
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9
9.0
Superb
High Loft™ ECO-Thermal Building Construction Loft Insulation Roll - Itch Free & None Toxin - Sustainable & Eco Alternative to Glass Wool Insulation (5m x 370mm x 110mm)
High Loft

High Loft™ ECO-Thermal Building Construction Loft Insulation Roll - Itch Free & None Toxin - Sustainable & Eco Alternative to Glass Wool Insulation (5m x 370mm x 110mm)

Why we love it
  • Efficient in heat loss reduction.
  • Made of 70% recycled Polyester.
  • Delivers itch-free, anti-allergy comfort.
Main Highlights
  • HIGH LOFT provides thermal insulation for cold room construction in both new and renovated projects. According to the Energy Saving Trust in an uninsulated home: -66% heat loss through uninsulated solid walls . 33% heat loss through uninsulated walls . 25% heat loss through uninsulated loft / roof space. 20% heat loss through windows & doors. And Most Importantly it is Non Allergy, Itch free.
  • Material: Thermal Construction Insulation is made of recycled Polyester and the amount of recycled materials is 70%.
  • Specifications: These Thermal Insulation’s Length: 5 Meter, Width: 370 mm & Thickness: 110 mm. Coverage: 1.85 m² and R-value: 2.29 m² K/W.
  • Features: Recycled polyester which can be doubled up to make around 220 mm of thickness. Making houses more energy efficient and helps to feel warmer. Itch free and anti allergy.
  • Our thermal insulation for cold rooms and it keeps room temperature normal. 100% Customers Satisfaction Guaranteed. If for any reason you have any kind of query, feel free to contact with us! Wish you be always happy and healthy!
9.0
Superb
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10
8.9
Excellent
Green Loft 8m Thermal Insulation Roll – 370mm x 110mm – Non-Itch, Moisture & Mould Resistant Loft, Wall & Roof Insulation – Energy-Saving DIY Loft Roll for Year-Round Comfort
Green Loft

Green Loft 8m Thermal Insulation Roll – 370mm x 110mm – Non-Itch, Moisture & Mould Resistant Loft, Wall & Roof Insulation – Energy-Saving DIY Loft Roll for Year-Round Comfort

Why we love it
  • Ultra-soft and itch-free insulation.
  • Moisture-repelling hydrophobic fibers.
  • Easy to cut and install.
Main Highlights
  • Premium Itch-Free Insulation: Made from ultra-soft, non-irritant polyester, this insulation is safe to handle without gloves or protective gear. Supplied as a single 8-metre roll, it’s ideal for fast, hassle-free DIY loft or roof insulation.
  • Stops Damp & Mould Damage – Hydrophobic fibres repel moisture to help prevent condensation, mould, and mildew in enclosed spaces.
  • Safe & Comfortable to Install – Non-itch, chemical-free polyester – no gloves or masks needed, perfect for DIY or professional use.
  • Insulates Any Space – Ideal for lofts, attics, wall cavities, sheds, garages, and roof voids in both renovations and new builds.
  • Easy-Cut, No-Sag Design – Lightweight and flexible to fit tight spots, holds shape over time for lasting insulation performance.
  • Coverage: 2.96 m² and R-Value: 2.29 m²·K/W – suitable for improving thermal efficiency in various construction settings.
8.9
Excellent
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Related Deals You Might Like for Loft Insulation

📊We scanned 417 products
🔍
We reviewed the most relevant Loft Insulation offers across Amazon and leading retailers, covering major brands and models. Our shortlist features trusted names like Earthwool, Knauf, Green Loft, LOWENERGIE, High Loft, known for dependable quality and smart design.
⭐
To determine today's best Loft Insulation, we analysed 2086 real customer and expert reviews, focusing on satisfaction, real-world performance and long-term reliability. We also weigh each review's relevance, authenticity and freshness for a fair comparison.

What we concluded:

🏆 #1
EARTHWOOL 10 x Insulation Loft Rolls Knauf 200mm Thickness, 6.84m2 Per Roll Combi Cut 68.40m2 Area Covered Deliveries to Mainland UK ONLY

Our overall winner is EARTHWOOL 10 x Insulation Loft Rolls Knauf 200mm Thickness, 6.84m2 Per Roll Combi Cut 68.40m2 Area Covered Deliveries to Mainland UK ONLY by Earthwool. It stands out for the right balance of quality, performance and value.

✨ What sets it apart:
✓Economical and lightweight insulation quilt
✓Flexible with partially cut perforations
✓Provides excellent thermal performance
💎 Best Value
EARTHWOOL 5 x Insulation Loft Rolls Knauf Earthwool 200mm Thickness, 6.84m2 Per Roll Combi Cut 34.20m2 Area Covered Deliveries to Mainland UK ONLY

The best value for most shoppers is EARTHWOOL 5 x Insulation Loft Rolls Knauf Earthwool 200mm Thickness, 6.84m2 Per Roll Combi Cut 34.20m2 Area Covered Deliveries to Mainland UK ONLY by Earthwool, with consistently high satisfaction across expert and customer reviews.

💰 Best Deal
Green Loft 8m Thermal Insulation Roll – 370mm x 110mm – Non-Itch, Moisture & Mould Resistant Loft, Wall & Roof Insulation – Energy-Saving DIY Loft Roll for Year-Round Comfort

The strongest deal right now for Loft Insulation is Green Loft 8m Thermal Insulation Roll – 370mm x 110mm – Non-Itch, Moisture & Mould Resistant Loft, Wall & Roof Insulation – Energy-Saving DIY Loft Roll for Year-Round Comfort at Green Loft, currently at % off.

🔄Our Loft Insulation ranking is updated regularly to reflect new releases and price changes—check back for the latest picks and deals.